Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: HEDTDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request U-T8CUS-2S cust packed cold trap, UNITY 2/xr and TD-100/xr Price on request M-MCAL20 Disposable dish, alum, 20mL,pk100 Price on request